MLB.com's Carrie Muskat has been covering Major League Baseball since 1981 and is the author of "Banks to Sandberg to Grace: Five Decades of Love and Frustration with the Cubs." You can follow her on Twitter @CarrieMuskat. Here, she blogs about the Cubs.

2/15 Cubs spring notebook

Tyler Colvin and Brad Snyder were both taking grounders at first base on Tuesday. Colvin will get some action there in Cactus League games. The Cubs want to see if he can backup Carlos Pena.

* Fernando Perez, Augie Ojeda, Darwin Barney, Brett Jackson, Josh Vitters, Blake DeWitt and Reed Johnson were among the other position players working out at Fitch Park. They don’t have to report until Friday.

* A motorist driving down Center Street near the Cubs’ Fitch Park complex was surprised when a baseball struck his windshield. Apparently, Jackson put a good swing on a pitch during batting practice.

* The Cubs could leave camp with three left-handers in the bullpen, and possibly four. They also could have four right-handed starters if James Russell doesn’t make the rotation.

* With Matt Sinatro gone, Mike Quade will work with the catchers this season. Quade did that in the Minor Leagues.

* Ivan DeJesus said he had a good week with shortstop Starlin Castro in the Dominican Republic this offseason. They stressed throwing mechanics. Minor League infield coordinator Franklin Font also spent a week with Castro in the Dominican.

* Quade lobbied the media to root for the rottweilers in the Westminster Dog Show to win.

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